Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 53 of 73)

Attempt Fluid Mechanics for Chemical Quiz
Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively) ?
A. Fl-2t, ml-1t-1
B. Flt, ml-1t-1
C. Ml-1t-3, f-1l2t
D. F-1l2t-1, mlt-3
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Which of the following two quantities when same, makes one pipe system equivalent to another pipe system ?
A. Head & discharge
B. Length & discharge
C. Length & diameter
D. Friction factor & diameter
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The head loss due to sudden expansion is__________________?
A. (v12 – v22)/2gc
B. (v1 – v2)2/2gc
C. (v1 – v2)/2gc
D. (v12 – v22)/gc
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The discharge through a Venturimeter depends upon _________________?
A. Pressure drop only
B. Its orientation
C. Co-efficient of contraction only
D. None of these
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The ratio of the wall drag to the form drag in the Stoke’s law range (for motion of spherical particles in a stationary fluid) is__________________?
A. 0.5
B. 1
C. 2
D. 0.33
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Pick out the wrong statement pertaining to fluid flow ?
A. The ratio of average velocity to the maximum velocity for turbulent flow of newtonian fluid
In Circular pipes is 0.5
B. The newtonian fluid velocity in a circular pipe flow is maximum at the centre of the pipe
C. Navier-stokes equation is applicable to the analysis of viscous flows
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Priming of a centrifugal pump is done to___________________?
A. Increase the mass flow rate of fluid
B. Develop effective pressure rise by the pump
C. Avoid chances of separation inside the impeller
D. None of these
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The fluid property which matters for falling rain drops to acquire spherical shape is its__________________?
A. Pressure
B. Height of descend
C. Viscosity
D. Surface tension
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Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an________________?
A. Weir
B. Hot wire anemometer
C. Cup and vane anemometer
D. None of these
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A centrifugal pump loses prime after starting. The reason of this trouble may be_____________________?
A. Incomplete priming
B. Too high a suction lift
C. Low available npsh and air leaks in the suction pipe
D. All a., b., and c.
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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